As a class, draw out a visual model of the
photosynthetic process on the blackboard, etc.
A series of probing questions (Appendix A)
can be asked to the class to make sure that all
relevant factors are included.

Explore

20 min

2.1, 3.1, 3.2, 3.3, 3.7, 4.3

Lab equipment specified in materials

3

Students will design an experiment to measure oxygen production from photosynthesis. Students will measure how much oxygen has been produced by the lab set up (high light vs. low/no light) over the specified time frame. Data will be collected, plotted on a graph, and compared among the
class.

Explain

5 min

4.3, 5.2, 5.3, 7.1, 7.2

none

3

Students will work in pairs and answer a
series of questions explaining what occurred
during the experiment. (What gas was
increasing, what was decreasing, etc?)

Expand

10 min

5.9

none

2

Students discuss what they think would happen in situations where other photosynthetic variables changed like temperature, carbon dioxide availability, etc.)